<template>
  <div>

    <!-- 1.定义面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 2.定义卡片视图 -->
    <el-card class="box-card">

      <!-- 3.定义栅格的一行 :gutter="20"定义行间距   :span="9" 占位符  -->
      <el-row :gutter="20">
        <el-col :span="9">
          <!-- 3.定义搜索框 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable  @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <!-- 定义添加按钮-->
          <el-button type="primary" @click="dialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户数据表格展现  border 边框线属性  -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="序号"></el-table-column>
        <el-table-column prop="username" label="用户名"></el-table-column>
        <el-table-column prop="phone" label="电话"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="status" label="状态">

          <!-- 作用域插槽  固定用法:scope.row 获取行级元素对象  -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.status" @change="updateStatus(scope.row)"
                       active-color="#13ce66" inactive-color="#ff4949">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="small" @click="updateUserBtn(scope.row)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="small" @click="deleteUser(scope.row)"></el-button>
          </template>

        </el-table-column>
      </el-table>

      <!-- 定义分页组件 关于分页插件的属性说明
           1.@size-change 如果分页中每页显示的条数发生变化 则会触发这个该事件
           2.@current-change 当页数发生改变时,触发该函数
           3.current-page 当前选中的页
           4.page-sizes   页面数据展现的选项
           5.page-size    默认选中的条数
           6.layout    分页中展现的数据种类
           7.total     记录总数
      -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pageNum"
        :page-sizes="[5, 10, 20, 40]"
        :page-size="queryInfo.pageSize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>

    <!-- 编辑用户新增对话框 visible.sync 控制对话框的显示-->
    <el-dialog title="添加用户" :visible.sync="dialogVisible" width="50%" @close="closeDialog">

      <!-- 定义用户提交表单数据-->
      <el-form :model="addUserModel" :rules="rules" ref="addUserRef" label-width="100px" class="demo-ruleForm">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addUserModel.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addUserModel.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="密码确认" prop="password2">
          <el-input v-model="addUserModel.password2" type="password"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="phone">
          <el-input v-model="addUserModel.phone"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addUserModel.email"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUserBtn">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 定义修改页面 当对话框关闭时,将表格数据重置-->
    <el-dialog title="修改用户" :visible.sync="updateDialogVisible" width="50%" @close="closeUpdateDialog">
      <!-- 定义用户提交表单数据-->
      <el-form :model="updateUserModel" :rules="rules" ref="updateUserRef" label-width="100px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="updateUserModel.username"  disabled ></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="phone">
          <el-input v-model="updateUserModel.phone"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="updateUserModel.email"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="updateDialogVisible = false" >取 消</el-button>
        <el-button type="primary" @click="updateUser">确 定</el-button>
      </span>
    </el-dialog>


  </div>
</template>

<script>

export default {
  data(){
    //校验邮箱规则 rule校验规则   value校验的数据   callback回调函数
    const checkEmail = (rule, value, callback) => {
      //定义邮箱的正则表达式  JS中用/来表示正则表达式的开始和结束
      const emailRege = /^[a-zA-Z0-9-_]+@[a-zA-Z0-9-_]+\.[a-zA-Z0-9-_]+$/
      //正则表达式语法校验  test(xx) 校验成功 返回true  校验失败返回false
      if (emailRege.test(value)) {
        //表示邮箱合法 正确返回
        return callback()
      }
      callback(new Error('请填写正确的邮箱地址'))
    }

    //校验手机号的邮箱规则
    const checkPhone = (rule, value, callback) => {

      //定义校验手机号的正则语法
      const phoneRege = /^1[34578][0-9]{9}$/
      if (phoneRege.test(value)) {

        return callback()
      }
      callback(new Error('请填写正确的手机号'))

    }

    const checkPassword = (rule, value, callback) => {
      if(this.addUserModel.password !== value) return callback(new Error('2次密码输入不一致'))
      //否则校验成功
      callback()
    }

    return {
      queryInfo: {
        query: '',
        pageNum: 1,
        pageSize: 5
      },
      userList: [],
      //记录总数是数值类型
      total: 0,
      dialogVisible: false,
      addUserModel: {
        username: '',
        password: '',
        password2: '',
        email:  '',
        phone:  ''
      },
      //数据校验规则
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 30, message: '长度在 3 到 30 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 30, message: '长度在 3 到 30 个字符', trigger: 'blur' }
        ],
        password2: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 30, message: '长度在 3 到 30 个字符', trigger: 'blur' },
          { validator: checkPassword , trigger: 'blur' }
        ],
        phone: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { min: 3, max: 30, message: '长度在 3 到 30 个字符', trigger: 'blur' },
          { validator: checkPhone , trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { min: 3, max: 30, message: '长度在 3 到 30 个字符', trigger: 'blur' },
          { validator: checkEmail , trigger: 'blur' }
        ]
      },
      updateDialogVisible: false,
      //定义修改用户数据封装
      updateUserModel: {
      }
    }

  },
  methods: {
    async getUserList(){
      const {data: result} = await this.$http.get('/user/list',{
        params: this.queryInfo
      })
      if(result.status !== 200) return this.$message.error("用户列表查询失败")
      console.log(result.data)
      this.userList = result.data.rows
      this.total = result.data.total
      //console.log("总记录数:"+this.total)
    },
    async updateStatus(user){
      //实现用户状态修改  注意使用模版字符串  ES6中提出的新用法 ${key}
      //const {data: result} = await this.$http.put('/user/status/'+user.id+'/'+user.status)
      const {data: result} = await this.$http.put(`/user/status/${user.id}/${user.status}`)
      if(result.status !== 200) return this.$message.error("用户状态修改失败!")
      this.$message.success("用户状态修改成功!")
    },
    handleSizeChange(pageSize){
      //console.log("每页展现的条数"+pageSize)
      this.queryInfo.pageSize = pageSize
      this.getUserList()
    },
    handleCurrentChange(pageNum){
      //console.log("页数:"+pageNum)
      this.queryInfo.pageNum = pageNum
      this.getUserList()
    },
    closeDialog(){
      //重置表格数据
      this.$refs.addUserRef.resetFields()
    },
    //校验用户数据
    addUserBtn(){
      this.$refs.addUserRef.validate(async valid => {
        //如果校验失败 则停止数据
        if(!valid) return
        //console.log(this.addUserModel)
        const {data: result} = await this.$http.post('/user/addUser',this.addUserModel)
        if(result.status !== 200) return this.$message.error("用户新增失败")
        this.$message.success("用户新增成功")
        //关闭对话框
        this.dialogVisible = false
        //重新获取用户列表
        this.getUserList()

      })
    },
    async updateUserBtn(user){
      this.updateDialogVisible = true
      const {data: result} = await this.$http.get("/user/"+user.id)
      if(result.status !== 200) return this.$message.error("用户查询失败")
      this.updateUserModel = result.data
    },
    closeUpdateDialog(){
      //重置表格数据
      this.$refs.updateUserRef.resetFields()
    },
    updateUser(){
      //1.预校验数据
      this.$refs.updateUserRef.validate(async valid => {
        if(!valid)  return this.$message.error("表单验证没有通过")
        //根据接口文档要求封装数据
        let user = {}
        user.id = this.updateUserModel.id
        user.phone = this.updateUserModel.phone
        user.email = this.updateUserModel.email
        const {data: result} = await this.$http.put(`/user/updateUser`,user)
        if(result.status !== 200) return this.$message.error("用户修改失败")
        this.$message.success("用户更新成功")
        this.updateDialogVisible = false
        this.getUserList()
      })
    },
    async deleteUser(user){
      //1.消息确认框
      const result =  await this.$confirm('此操作将永久删除 '+user.username+', 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(error => error)

      //如果确认  confirm  如果取消 cancel
      if(result !== 'confirm'){
        this.$message.info("删除取消")
        return this.$message.info("删除取消")
      }
      const {data: result2} = await this.$http.delete(`/user/${user.id}`)
      if(result2.status !== 200) return this.$message.error("删除失败")
      this.$message.success("删除成功")
      //重新加载 数据
      this.getUserList()
    }
  },
  //利用钩子函数实现数据查询
  mounted(){
    this.getUserList()
  }
}
</script>


<style lang="less" scoped>

</style>
